Line coupling



J. H. PAISLEY LINE COUPLING June 11, 1940.

Filed Nov; 14, 1938 T 0 J; n e U i A iiorneys Patented June 11, 1940 v UNITED STATES PATENT OFFICE LINE COUPLING John H. Paisley, Elmira, N. Application November 14, 1938, Serial No. 240,384

2 Claims.

This invention relates to couplings for hydraulic, fluid, or lines for connecting two sections of such line together and an object of the invention is to provide a coupling whereby such 5 sections may be connected or disconnected without the loss of the air or liquid and without the entrance of air into the line. 1

The invention together with its objects and advantages willvbe best understood from a study of the following description taken in connection with the accompanying drawing wherein:

Figure 1- is a view partly in section and partly in elevation showing my invention.

Figure 2 is a vertical transverse sectional view 16 taken substantially on the line 22 of Figure 1.

Figure 3 is an enlarged fragmentary vertical transverse sectional view of. the valve head.

Figure 4 is a front elevational view of one of the valve head members.

30 Referring now to the drawing by reference numerals it will be seen that the invention comprises a pair of the cylinders, 28 and 32 arranged in tandem. The cylinder 28. has its end wall 23 provided with a tapered valve seat 30 to acg5 commodate the valve disk 3| that opens outwardly of the cylinder 28. Cylinder 32 has its end wall 33 provided with a seat 34 against which the-valve disk 35 seats.

The cap 36 for the cylinder 32 is provided 30 with an inwardly extending guide socket 31 which receives a pilot pin 38 provided for the valve 35.

Disposed within the guide socket 31 is a coil spring 39 that at one end impinges against the V 35 inner side of the cap 36 and at an opposite end impinges against the pilot pin 38 normally urg ing the valve disk 35 into seating engagement with the valve seat 34. a

The valve disk 3! is suitably connected to a screw threaded operating stem 40 which is mounted in the threaded cap 4|.

The valve disk 3! has formed therein a tapered socket 42 for receiving the tapered projection l3 on the valve disk 35 as shown in Flgure3 of 45 the drawing.

Obviously, when it is desired to have a free flow of air or fluid through the coupling valves.

it is desired to uncouple the section of a line the valve disk 3i is seated by turning the threaded stem 40. When the valve disk 3| is seated in the seat 30 the spring 39 urges the valve disk 35 into the seat 34. Thereafter the cylinders 28 and 32 maybe uncoupled without the escape of air or other fluid.

It will thus be seen that I have provided a coupling for hydraulic power and vehicle brake lines that is simple in design, inexpensive to 10 construct and will otherwise meet the requirements of a coupling of this character.

What is claimed:

1. A coupling of the character described comprising a pair of cylinders adapted to be arranged 5 in tandem, coupling means for the cylinders at the meeting ends thereof, each of said cylinders being provided with a nipple for connection of the cylinders to a section of a hose or analogous line, one of said cylinders at the meeting end thereof being provided with an external valve seat and the other of said cylinders at the meeting end thereof being provided with an internal valve seat, valves operating in one of said cylinders for engagement with said valve seats, a stem accessible exteriorly of the other cylinder for unseating the valves, and compressible means for normally seating said valves.

2. A coupling of the character described comprising a pair of cylinders adapted to be arranged in tandem, a coupling means for the cylinders at the meeting ends thereof, each of said cylinders being provided with a nipple for connection of the cylinders to a section of a hose or analogous line, one of said cylinders at the meeting 5 end thereof being provided with an external valve seat and the other of said cylinders at the meeting end thereof being provided with an internal valve seat, valves operating in one of said cylinders for engagement with said valve seats. one of said valves having a tapered socket therein for thereception of a tapered projection on the other of said valves, a stem accessible exteriorly of one of said cylinders for unseating the valves, and compressible means housed within the other of said cylinders for normally seating said valves.

JOHN H. PAISLEY. 

